Mod your 4G iPod with internal Bluetooth

via engadget

For the extreme tinkerer and iPod aficionado, we present to you what appears to be the first ever internal-Bluetooth enabled iPod. Using a flash-memory-modded 20GB 4G iPod, a Jabra A120S Bluetooth music adapter, some clever wiring, a little drilling, and some good old-fashioned elbow grease, one modder has taken things inside his DAP to dizzying heights which can only be referred to as "the next level." The mod has its catches of course -- first you'll have to kick the hard drive to the curb in favor of the more space-conscious flash memory, and you'll need to be pretty handy with a soldering iron and voltmeter, but if you've got the mettle (and this how-to guide), you should be rocking the new Mortiis album wirelessly very, very soon. Check the read link for all the step-by-step goodness.

http://www.instructables.com/id/Add-...-To-Your-iPod/

Pretty slick little mod. I bet the battery life isn't really affected since he is using a compact flash card.

I guess I could try my hand at this mod shortly, looks simple enough.